JP6501294B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article.

  People with hemorrhoids may stain their underwear with bleeding or medication, and may use sanitary napkins or light incontinence products to prevent their staining. As a liquid-suction treatment material for people with decubitus diseases, there is the same shape as an absorbent article such as a sanitary napkin or a light incontinence absorbent pad, that is, an oblong, substantially rectangular and planar one. The conventional substantially rectangular and planar absorbent articles are not suitable for hemorrhage and the like in hemorrhoid diseases in terms of shape, thickness and absorption amount. From such a thing, the pad and underwear for people with lupus disease are proposed (refer patent document 1 and patent document 2).

  The underwear for the mania of the patent document 1 comprises an annular rubber tube in which air of a predetermined pressure is enclosed and a patch covering the outer surface of the inner body of the underwear to alleviate pain when sitting down for the mania. The annular tube is sewn so as to surround the region facing the wearer's anal region, and when the wearer is sitting, the annular region is supported by the annular tube which is slightly flatly biased, and the anal region compresses from the seat surface It has been proposed that you do not receive. Patent Document 2 discloses a hemorrhoid pad having a protrusion.

JP, 2006-223697, A Unexamined-Japanese-Patent No. 2007-195839

  However, in the above-mentioned prior art, although there are some provided with a ring so as not to press the affected part and those having a projection, it has not been sufficient for achieving both absorbability and alleviation of pain.

  Then, this invention is made in view of this point, and an object of this invention is to provide the absorbent article which is good in cushioning property and which does not produce a pain easily at the time of wear.

In order to solve the above problems, (1) the present invention is an absorbent article for butt care, comprising a liquid-permeable top sheet on the body contact side surface and a liquid-impermeable back sheet on the back side And having an absorber provided between the top sheet and the back sheet, and having a thickness of 3 mm or more and 8 mm or less, and the compression property in the KES compression test of the absorbent article has a compression hardness LC value of and 0.4 to 0.6, the compression work amount WC is 4 gf · cm / cm ² or more 8 gf · cm / cm ² or less, the compression resilience RC is 60% or less than 40%.

(2) In the above (1), the absorbent article is made of a water-degradable material.
(3) The above-mentioned absorber includes a water-splitting paper in which a plurality of crepe papers having a basis weight of 12 g / m ^{2 to} 25 g / m ² and a thickness of 0.12 mm to 0.30 mm are laminated.

  According to the present invention, it is possible to provide an absorbent pad that has a good feeling of wearing for the user, prevents stains on the undergarment, has a good cushioning property, and is less likely to cause pain when worn.

BRIEF DESCRIPTION OF THE DRAWINGS The top view which shows the external appearance of the absorbent article concerning embodiment of this invention. XX sectional drawing in the absorbent article shown in FIG.

  Preferred embodiments of the absorbent article of the present invention (hereinafter referred to as embodiments) will be described in detail below. Like numbers refer to like elements throughout the description of the embodiments. Further, in the embodiment, “front”, “rear”, “left”, and “right” indicate directions as viewed from the user.

  First, one embodiment of the absorbent article 1 in the present invention will be described based on FIGS. 1 and 2. FIG. 1 is a plan view showing the appearance of an absorbent article according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the absorbent article shown in FIG.

  As shown in FIG. 1 and FIG. 2, the absorbent article 1 is an absorbent article for bottom care, and comprises, from the side in contact with the skin, a liquid-permeable top sheet 2 on the body contact side surface and a liquid holding property. An absorbent body 3 and a liquid-impermeable back sheet 4 on the back side are arranged in an overlapping manner. Furthermore, a second sheet 5 is provided between the top sheet 2 and the absorber 3.

  The absorbent article 1 has a substantially inverted shape that narrows in the forward direction from the wide portion on the rear side. The absorbent article 1 is formed by laminating the respective elements and fixing the periphery thereof partially or entirely by using a hot melt adhesive. The type and application method of the hot melt adhesive is not particularly limited, but known methods such as a curtain coating method and a spiral method of applying a molten adhesive from a nozzle without contact, and a slot method etc. Applicable The absorbent article 1 may have embossing from the top sheet 2 to the absorbent 3. When worn on the inside of the undergarment, the absorbent article 1 is folded and used along the front-rear direction.

  By setting the thickness to 3 mm or more and 8 mm or less, the absorbent article 1 can reduce discomfort when the user wears it. In addition, the maximum width W having the maximum length in the width direction is at a position that is two-thirds or more and nine-tenths or less of the total length from the front end, and the ratio of the maximum width W to the total length L is And 2: 3 or more and 3: 5 or less.

(Measurement method of thickness)
The thickness of the absorbent article 1 was measured using a thickness gauge (dial thickness gauge "PEACOCK" manufactured by Ozaki Mfg. Co., Ltd.). The measurement conditions were a measurement load of 250 gf and a probe diameter of 30 mm, and the sample was placed between the probe and the measurement table, and the gauge was read when the probe was lowered at a speed of 1 mm or less per second. In addition, the measurement was performed after hold | maintaining in an equilibrium state on the temperature and humidity conditions (23 +/- 1 degreeC, 50 +/- 2% RH) prescribed | regulated to JIS-P8111.

  As the absorbent article 1 of the present invention, there can be mentioned an absorbent pad for hemorrhoid disease, which absorbs hemorrhage, excrement and outflow drug mainly from the anus and around the anus of the hemorrhoid disease.

The base material of the top sheet 2 only needs to have liquid permeability such that liquid such as urine moves to the absorber. For example, non-woven fabric such as thermal bond non-woven fabric, composite non-woven fabric laminated thermal bond / spun bond , An open-ended polyethylene film, a polyethylene foam, a foamed film such as urethane foam, or a composite sheet obtained by laminating them. In order to improve liquid permeability, the top sheet 2 is preferably embossed or perforated. The processing method may be any known method without limitation. In order to reduce skin irritation, it is also preferable to make the top sheet 2 contain a lotion, an antioxidant, an anti-inflammatory component, a pH adjuster, an antibacterial agent, a moisturizing agent and the like. Furthermore, in terms of strength and processability, the basis weight of the top sheet 2 is 10 g / m ² or more and 50 g / m ² or less, preferably 15 g / m ² or more and 30 g / m ² or less.

  The base material of the absorbent body 3 is not particularly limited as long as it is generally used for absorbent articles such as sanitary napkins, diapers and urine pads, and for example, fluff pulp, super absorbent polymer (Super Absorbent Polymer; , “SAP”), and a hydrophilic sheet. As such fluff pulp, non-wood pulp such as wood pulp and synthetic fiber, polymer fiber etc. may be disintegrated into cotton, as SAP, sodium polyacrylate, as hydrophilic sheet, tissue, absorbent paper, hydrophilicity Non-woven fabrics can be mentioned.

  The absorber 3 is configured in a single-layer or multi-layer sheet shape using the above-described base material. Among them, preferred is a fluff pulp web formed by mixing a hydrophilic fiber matrix of a fluff pulp web with SAP particles, such as wood fluff pulp, or an SAP sheet in which SAP particles are fixed to a hydrophilic sheet. In order to obtain a balance of water absorption power between fluff pulp or hydrophilic sheet and SAP particles, 5 parts by mass or more and 60 parts by mass or less of SAP particles per 100 parts by mass of fluff pulp or hydrophilic sheet, more preferably It mixes in 10 mass parts or more and 40 mass parts or less. Further, in order to prevent leakage of SAP particles and to stabilize the shape of the absorber 3, it is preferable to wrap the absorber 3 in a hydrophilic sheet (not shown) such as a tissue.

  The base material of the back sheet 4 of the present embodiment may be any non-woven fabric, a resin film, or any other liquid-impervious material that prevents liquid such as blood held by the absorbent 3 from leaking into the undergarment. It forms from materials, such as a composite sheet which laminated these. Such non-woven fabric is not particularly limited in the manufacturing method, and examples thereof include spunbond, meltblown non-woven fabric, spunbond / meltblown, spunbond / meltblown / spunbond laminated non-woven fabric, and composite materials thereof. Moreover, as this resin film, polyester, polyvinyl alcohol, polyethylene, a polypropylene, the composite film of polyethylene and a polypropylene etc. are mention | raise | lifted, for example.

The basis weight of the back sheet 4 is preferably 15 g / m ² or more and 40 g / m ² or less from the viewpoint of strength and processability. Moreover, in order to prevent the stuffing at the time of mounting | wearing, it is preferable to give a back sheet 4 moisture permeability. In order to provide moisture permeability, for example, it is possible to cite a filler in the resin film of the base material. As a filler, calcium carbonate can be mentioned, and the processing method can carry out a known method without restriction.

  The back sheet 4 can be provided with an adhesive (not shown) on the non-skin contact surface. The bonding portion has a role of anti-displacement when the absorbent article 1 is attached to and attached to the undergarment. The pressure-sensitive adhesive which forms the bonding part can be used without particular limitation, and examples thereof include polyacrylic acid ester, vinyl acetate-ethylene copolymer, vinyl acetate-acrylic copolymer, polymethyl methacrylate, polystyrene, styrene-acrylic Examples thereof include hot melt pressure-sensitive adhesives such as base copolymers, polyester resins, epoxy resins, and butadiene-styrene copolymers. These may be used alone or in combination of two or more. An adhesive part can be formed by applying the above-mentioned adhesive to the back sheet 4. Further, the shape of the bonding portion can be selected without particular limitation, such as a substantially rectangular shape, a circular shape, an oval shape, etc. When individually packaging the absorbent article 1, a release paper is used to protect the bonding portion on the bonding portion 41. Can also be provided.

Examples of the second sheet 5 include an air through nonwoven fabric, a point bond nonwoven fabric, a spunbond nonwoven fabric, a meltblown nonwoven fabric, or a composite nonwoven fabric obtained by laminating spunbond / meltblown or spunbond / meltblown / spunbond. The thickness of the second sheet 5 is preferably 0.1 mm or more, and more preferably 0.5 mm or more. The basis weight is preferably 15 g / m ² or more and 80 g / m ² or less, and more preferably 25 g / m ² or more and 40 g / m ² or less.

(Compression characteristics test)
The softness of the soft touch of the absorbent article 1 can be represented by three characteristic values of compressive hardness (LC), compressive work (WC) and compressive resilience (RC).
Compressive hardness (LC) is the linearity of a compressive load-compression strain curve, and indicates that the closer the value to 1, the harder it is to compress.
The absorbent article 1 of the present embodiment preferably has a compression hardness (LC) of 0.4 or more and 0.6 or less.

The amount of work to be compressed (WC) is the energy consumption when pushing the central part of the absorbent article up to 50 g, and the larger the value, the more energy is required to compress. In the absorbent article 1 of the present embodiment, the amount of compression work (WC) is preferably in the range of 4gf · cm / cm ² or more 8gf · cm / cm ² or less.

  The compression resilience (RC) represents the recoverability when the fiber is compressed, and the closer the value to 100, the better the recoverability. The absorbent article 1 of the present embodiment preferably has a compression resilience (RC) of 40% or more and 55% or less.

  The compression hardness (LC), the compression work (WC) and the compression resilience (RC) were tested for compressibility using KATO-TEC KES-FB3.

  The absorbent article 1 has cushioning properties as a whole even if it is in close contact with the epileptogenic area by setting the compressive stiffness (LC), the amount of compressive work (WC) and the compressive resilience (RC) within the above ranges. It is good.

  The absorbent article 1 is preferably folded so that the top sheet 2 side is facing at the center in the front-rear direction, and is individually wrapped with a packaging film. In this type of articles, each article is individually wrapped and plural pieces are put together and the whole package is made and distributed, but from the economical point of view such as transportation, display, storage, etc., each individually wrapped article has no gap Packaged in a package. At this time, since the absorbent article continues to be subjected to external pressure in a state of being folded and individually packaged, the absorbent article is broken. According to this configuration, the sense of wearing does not feel uncomfortable due to a crease that occurs in a state different from the bending direction at the time of use.

In the above description, the respective materials constituting the absorbent article 1 are not particularly limited, but it is preferable to be made of a water-degradable material from the viewpoint of ease of disposal after use. In that case, the top sheet is made of a water disintegratable spunlace non-woven fabric or the like, the absorbent layer is made of a water disintegrable paper or the like, and the leakproof sheet is made of a PVA film or a water disintegrable non-woven fabric. Furthermore, it is preferable that the undergarment fixing member be a water-soluble glue, and the packaging material of the individual package be also water-degradable. The water-splitting paper for the water-absorbing layer is preferably a laminate of a plurality of crepe papers having a basis weight of 12 g / m ^{2 to} 25 g / m ² and a thickness of 0.12 mm to 0.30 mm.

As the absorbent article, an absorbent pad for hemorrhoids was used. The absorbent sheet is laminated in the order of the top sheet 2, the second sheet 5, the absorber 3, and the back sheet 4 as viewed from the skin contact surface, and the entire periphery is fixed using a hot melt adhesive. Made. The top sheet 2 uses a thermal bond non-woven fabric (basis weight 25 g / m ² ) as a substrate, and the second sheet 5 uses a thermal bond (air through) non-woven fabric (basis weight 28 g / m ² ) as a substrate. Absorber 3 was formed by mixing wood fluff pulp and SAP particles in a ratio of 3: 1 and using compression. The back sheet 4 used a 20 μm polyethylene film as a base material, and provided an adhesive part for fixing underwear on the non-skin contact surface. As a comparative example, what formed and changed wood fluff pulp and SAP particles suitably was used.
The measurement was conducted for a test of compressibility using KES-FB3 manufactured by Kato Tech Co., Ltd. In the test, the compression area is 1 cm ² , the amplifier setting is SENS ² (10 gf / cm ² ), the compression speed is 10 mm / sec, the compression hardness (LC), the compression work amount (WC) and the compression resilience (RC) Calculated. Moreover, sensory evaluation was performed.
(sensory evaluation)
In the present example, sensory evaluation was performed. Evaluation of the softness of Examples 1 to 3 and Comparative Examples 1 to 3, which are absorbent articles, was performed on 20 panelists. One of the evaluations of “(a) good feeling in use”, “(b) neither” and “(c) bad feeling in use” was selected. When the evaluation of (a) is 14 to 20 people is "○", when the evaluation of (a) is 8 to 13 people is "Δ", and when the evaluation of (a) is 0 to 7 people is "X" It displayed by.
The results are shown in Table 1.

  According to the absorbent article 1 of the present embodiment, even when the user wears the underwear and performs an activity, the fit with the hemorrhoid area is maintained, and the side leakage of the liquid such as blood is extremely small. Met.

  Although the present invention has been described above using the embodiment, it goes without saying that the technical scope of the present invention is not limited to the scope described in the above embodiment. It will be apparent to those skilled in the art that various changes or modifications can be added to the above embodiment. It is also apparent from the scope of the claims that the embodiments added with such alterations or improvements can be included in the technical scope of the present invention.

1 Absorbent article 2 top sheet 3 absorber 4 back sheet 5 second sheet

Claims (3)

An absorbent article for buttock care,
Liquid permeable top sheet on the body contact side surface,
Liquid-impermeable back sheet on the back side,
And an absorber provided between the top sheet and the back sheet,
Thickness is 3 mm or more and 8 mm or less,
The absorber is formed by mixing wood fluff pulp and SAP particles in a ratio of 3: 1,
The center of the absorbent article was measured using KES-FB3 manufactured by Kato Tech Co., Ltd., with a pressure area of 1 cm ² , an amplifier setting of SENS ² (10 g / cm ² ), and a compression rate of 10 mm / sec. The characteristic is that the compression hardness LC value is 0.4 or more and 0.6 or less,
The compression work amount WC is 5.9 gf · cm / cm ² or more and 7.6 gf · cm / cm ² or less,
An absorbent article having a compression resilience RC of 43 % or more and 56 % or less.   The absorbent article according to claim 1, wherein the absorbent article is made of a water-disintegrable material. The absorbent body is characterized in that it includes a water-splitting paper in which a plurality of crepe papers having a basis weight of 12 g / m ^{2 to} 25 g / m ² and a thickness of 0.12 mm to 0.30 mm are laminated. Or the absorbent article of Claim 2.

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